code: def __setitem__(self, key, value):
      self.children[key] = value
  
file_path: pytorch-metric-learning/src/pytorch_metric_learning/utils/key_checker.py
imports: from .None import common_functions
label_desc: Use image node_id 3 for calling the KeyCheckerDict obj's underlying member method code with example usage: obj.__setitem__(key, value) without return types